Olgami (1997)

Cast
Yoon So-jeong as Jin-sook
Choi Ji-woo as Su-jin
Park Yong-woo as Dong-woo

Also known as "The Hole"

Synopsis
Jin-sook has a close relationship with her son, Don-woo, and is surprised when he announces his engagement to Su-jin. After the wedding, the three end up living together, with a nervous Su-jin keen to impress her new mother-in-law. But Jin-sook is determined to sabotage her son's marriage.